Tower fan



FIG. 1 is a perspective view of a tower fan, showing our new design;

FIG. 2 is a front side elevation view of the tower fan of FIG. 1;

FIG. 3 is a back side elevation of the tower fan of FIG. 1;

FIG. 4 is a right side elevation view of the tower fan of FIG. 1;

FIG. 5 is a left side elevation view of the tower fan of FIG. 1;

FIG. 6 is a top plan view of the tower fan of FIG. 1; and,

FIG. 7 is a bottom plan view of the tower fan of FIG. 1.

The features shown in broken lines illustrate portions of the tower fan that form no part of the claimed design. 

CLAIM The ornamental design for a tower fan, as shown and described. 